GPL flag for x.org drivers

> The only aim here is to being able to quickly dismiss bug reports
> involving nvidia or frglx.
This of course, and that we can put the vendors under pressure with
customer issues.
The crux is, that they take code which is proven for decades, add their
stuff and in the end, they are not open to people which have problems
with it. These people will search the problems in X.org (like it
happened to me in 10747) first.
Such a driver is black box which has an effect on the rest of the
program in a matter we don't really know.